Pump



May 28, 1935. A, PE K 5 L 2,002,713

PUMP

Filed Jan. 24, 1955 4 Sheets-Sheet l May 28, 1935. A. J. PENlCK ET ALPUMP Filed Jan. 24, 1933 4 Sheets-"Sheet 2 May 28, 1935.

A. J. PENICK ET AL PUMP Filed Jan. 24, 1933 4 Sheets-She et 3 M ra};

y 1935- A. J. PENICK ET AL I 2,002,713

PUMP

Filed Jan. 24, 195:5 4 Sheeis-Sheet 4 Patented May 28, 1935 PUMP ArthurJ.'Penick and Kirby T. Penick,

Houston, Tex.

Application January 24, 1933, Serial No. 653,302

2 Claims.

This invention relates to apump.

The invention has particular relation to a pump specially designed foruse in pumping gritty fluid, such as .slushfi An object of the inventionis to provide a pump of the character described which includes cylindersand reciprocating plungers therein and wherein provision is made forexcluding the pumped fluid from the cylinders and plungers to the endthat these relatively reciprocable parts will not be worn or cut away bythe gritty fluid.

Another object of the invention is to provide a pump of the characterdescribed adapted to utilize a clean operating fluid which is separatedfrom the fluid being pumped by reciprocable pistons which are actuatedby the plungers by means of said operating fluid. f

Another object of the invention is to provide, in a pump of thecharacter described, novel means for packing the plungers.

With the above and other objects in view the I invention has particularrelation to certain novel features of construction, operation andarrangement of parts, an example of which is given in this specificationand illustrated in the accompanying drawings wherein:

Figure 1 shows a plan view of the pump partly broken away.

Figure 2 shows a longitudinal sectional view numeral l designates thepump casing as a whole which is provided with an inlet chamber 2 theintermediate valve chambers 3, 3 and the discharge chamber 4. Theintermediate valve chambers are separated by suitable partitions 5.Entering the inlet chamber 2 there is an inlet line B and leadingout'from a discharge chamber 4 there is the discharge line I.

Incorporated into the pump casing, beneath the inlet chamber 2 are thecylinders 8, 8 in each of which there is mounted to reciprocate aplunger 9. Each plunger is of a hollow cylindrical form open at itsforward end and closed at its other endand attached to this lastmentioned end there is a plunger rod l0. These plunger rods It workthrough suitable stuff ng boxes in the'end plates 12 which are securedto and close the corresponding ends of said cylinders.

Around each plunger 9 there is a packing sleeve i3, formed of suitablepacking material and which is confinedbetweenthe retaining rings l4, l4.One of these rings abuts the annular inside shoulder i5 of thecorresponding cylinder and the other ring is retained in place by thecylindrical open work cage it which surrounds the open end of theplunger and whose outer end is provided with a central socket ii. Thecorresponding end of each cylinder has the endplate 18 bolted thereon.Each endplate I8 has an internally threaded tubular extension l9 intowhich the rod anchor 23 is threaded. The inner end of this anchorterminates in a rod 2| whose inner end works in the corresponding socketl1 and surrounding said rod and interposed between the anchor 20 and thecorresponding cage i8 there is a strong coil spring 22 whereby said cageis held in yielding contact with the opposing ring M. The anchors 25,may be adjusted, as is'obvious to secure the proper compression on thecorresponding packing sleeve l3. Around each rod anchor 20 within thecorresponding extension l9 there is a packing 23 which is retained inplace by the gland 24 which is screwed in said extension and lookedtherein by means of the corresponding lock nut 25.

Each packing sleeve I3 is'provided with an annular groove 26 in each endthereof forming pockets and there are the channels 21 leading throughthe retainer rings it through which the operating fluid may enter saidpockets and when under pressure this operating fluid will hold the lipsforming the outer sides of said pockets closely against the cylinderwalls to prevent leakage past the packing sleeves l3.

The transversepartition 28, separating the inlet chamber 2 from thevalve chambers 3, has the valve seats 29 and cooperating with theseseats are the upwardly opening inlet valves 38. In the top of the pumpcasing above said valves are the removable caps 35 having the sockets 32forming guides for the valve stems 33 and surrounding these stems andinterposed between said valves and caps are the coil springs 34.

The valve chambers 3 communicate with the discharge chamber t throughthe valve seats 35 which are controlled by the outwardly opening valves36. Above these valves are the detachable caps 31 closing the top of thepump casing and having the sockets 38 in the underside thereof formingguides for the stems 39 of the valves 36.v

Interposed between the caps 3'! and valves 35 are the coil springs 40which normally hold said valves closed. The caps 3i, 3'! respectivelyare held in place by the corresponding yokes 4!, 42, which are suitablybolted to the top of the pump casing and whose ends are downwardlyturned and rest against said respective caps.

On opposite sides of the pump are the respec tive pairs of verticallydisposed cylinders 43, 43, 44, 4 whose lower ends are connected into therespective cylinders 8 by means of the front and rear channels 45, 55respectively and the upper ends of these respective pairs of verticalcylinders are connected into the valve chamber 3 by means of thechannels 47, 48 respectively.

In the vertical cylinders 43, M, are suitable liners as 49 and theseliners are retained in place by means of the open work cages "59 whichrest against the upper ends of said liners and which in turn are held inplace by corresponding set bolts 5! which are threaded through the headsof said cylinders. The liners '42! have the external shoulders 52arranged opposite the inside shoulders 53 in the corresponding cylindersand a suitable packing ring 5s surrounds each liner and is clampedbetween said shoulders. In each liner d9 there is a piston 55 whose endsare preferably cup shaped and these plungers are freely movable from endto end of their corresponding liners. Fastened in the ends of saidliners are the spiders 55, 55, having the central inwardly extendingstops 5?, 5'! which limit the movement of the corresponding plunger.These plungers 55 separate the clean operating fluid from the grittyfluid being pumped and prevent the gritty fluid from reaching the maincylinders 8 and the plungers 9 therein. 7

Upon forward stroke of a plunger 9, the operating fluid is drawn throughthe corresponding channel 46 from one side or" the corresponding pistons55, causing a downward movement or suction stroke of said pistons andthe fluidoto be pumped will accordingly be drawn in through the intakepipe 6 into the chamber 2 lifting the valves 30 and passing into thecorresponding cylinders 8 and upon back stroke of said plunger 9 theoperating fluid will be forced back through the corresponding channel 46beneath the pistonsflfi and these pistons will be forced upwardlyforcing the pumped fluid into the corresponding valve chambers 3 liftingthe corresponding valve 36 and passing out through the discharge line'I. Upon this back stroke of the plunger 9 the operating valve chamber 3and thence past the correspond- 1o ing discharge valve 36 and outthrough the discharge pipe 1. Thus, upon each stroke of a plunger 9, thepumped fluid will be drawn into one pair of cylinders 63, or M, andsimultaneously discharged from another pair of said cylinders to the endthat there will be a constant and approximately uniform volume of fluiddischarged from the discharge line 7.

The drawings and description disclose what is now considered to be apreferred form of the invention by way of illustration only, while thebroad principle of the invention will be defined by the appended claims.

What we claim is:

1. A pump comprising a casing having an inlet chamber, provided with aninlet, an intermediate chamber and a discharge chamber provided with anoutlet, said pump having a valve controlled port connecting said inletand intermediate cham bers and a valve controlled port connecting theintermediate chamber with the discharge chamber and through whichchambers and ports the pumped fluid may move from said inlet to saidoutlet, a pumping cylinder having a removable liner and removableinwardly extended end stops,

a piston therein, said pump having a passageway connecting theintermediate chamber with said cylinder, on one side of said piston, anoperating cylinder for containing an operating fluid, there 7 being apassageway connecting the operating cylinder with the pumping cylinder,on the other side of the piston and a reciprocable plunger in saidoperating cylinder.

2. In a pump, a pumping cylinder having an inside abutment, a liner inthe cylinder having an external abutment adapted to engage said internalabutment, means for securing said liner in the cylinder, end spiders atthe respective ends of the liner having inwardly projecting stops and apiston in the liner whose range of movement is limited by said stops.

ARTHUR J PENICK. KIRBY T. PENICK.

